Jamis PORTAL A1 2019
2019 Mountain
Estimate price |
3,999$
Weight | 14.29 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 27.5" -
Travel Front 130mm -
Travel Rear 130mm -
Fork Fox Rhythm Float 34
-
Groupset XT, Race Face -
Suspension Full -
Drivetrain 1 × 11 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
XS
156cm - 166cm
SM
163cm - 174cm
MD
171cm - 182cm
LG
179cm - 189cm
XL
185cm - 195cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Triple-butted 6061 aluminum, 130mm travel 3VO suspension, Enduro® Max sealed bearing pivots, 1.5 - 1 1/8” tapered head tube, 12x148mm thru-axle, Internal dropper post routing, Custom Jamis upper chainguide mounts, ISCG05 lower chainguide mounts, Fox Float DPS Performance Series EVOL shock w/3-position compression, 10mm hardware, replaceable derailleur hanger
Suspension Fork
Fox Rhythm 34 Float 29” w/ sweep adjust compression & lock-out,15x110mm axle, air spring compression, rebound adjust, tapered alloy steerer, 130mm travel
Rear Shock
FOX Float DPS Performance EVOL, 3-position compression, 10mm hardware
Drivetrain
Rear Derailleur
Shimano XT Shadow Plus, 11-speed
Front Derailleur
N/A
Shift Levers
Shimano XT, 1x11-speed
Cassette
Shimano M7000, 11-speed, 11-46T
Crank
Race Face Aeffect, 32T
Bottom Bracket
Race Face BSA
Chain
KMC X11, 11-speed
Chain Guide
None included (custom Jamis upper mounts)
Pedals
N/A
Wheels
Front Hub
Mavic XA35 27.5” wheelset, 15x110mm front, 12x148mm rear
Rear Hub
Mavic XA35 27.5” wheelset, 15x110mm front, 12x148mm rear
Rims
Mavic XA35 27.5” tubeless wheels, 15x110mm axle front and 12x148mm rear hubs
Spokes
Mavic XA35 27.5” wheelset
Tires
Vittoria Martello 27.5 x 2.8”, TNT tubeless
Brakes
Brakes
Magura Trail Sport hydraulic disc, 4-piston front/2-piston rear, Storm 180mm rotors
Brake Levers
Magura Trail
Cockpit
Stem
Race Face Aeffect, 50mm extension, 35mm clamp diameter
Handlebar
Race Face Aeffect, 780mm x 20mm rise, 35mm diameter
Grips
Jamis Lock-On
Headset
FSA Orbit 1.5 I.S. integrated cup, 8mm cone spacer
Seat
Saddle
WTB Volt
Seatpost
KS E20i Internal Dropper, Southpaw remote
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | XS | SM | MD | LG | XL |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.5 mm | 1.45 mm | 1.4 mm | 1.35 mm | 1.31 mm |
| Bottom Bracket Height | 329 mm | 329 mm | 329 mm | 329 mm | 329 mm |
| Front Center | 686 mm | 712 mm | 737 mm | 762 mm | 788 mm |
| Rake | 48 mm | 49 mm | 50 mm | 49 mm | 50 mm |
| Trail | 95 mm | 94 mm | 93 mm | 94 mm | 93 mm |
| Stack | 599 mm | 608 mm | 617 mm | 627 mm | 636 mm |
| Reach | 399 mm | 420 mm | 441 mm | 463 mm | 484 mm |
| Top Tube Length | 562 mm | 587 mm | 612 mm | 637 mm | 662 mm |
| Seat Tube Angle | 74.5 ° | 74.5 ° | 74.5 ° | 74.5 ° | 74.5 ° |
| Seat Tube Length | 368 mm | 394 mm | 432 mm | 483 mm | 533 mm |
| Head Tube Angle | 67.5 ° | 67.5 ° | 67.5 ° | 67.5 ° | 67.5 ° |
| Head Tube Length | 95 mm | 105 mm | 115 mm | 125 mm | 135 mm |
| Chainstay Length | 439 mm | 439 mm | 439 mm | 439 mm | 439 mm |
| Wheelbase | 1124 mm | 1150 mm | 1175 mm | 1200 mm | 1226 mm |
| Bottom Bracket Drop | 26 mm | 26 mm | 26 mm | 26 mm | 26 mm |
| Standover Height | 740 mm | 763 mm | 758 mm | 763 mm | 783 mm |
| Wheels | 27" | 27" | 27" | 27" | 27" |
| Rider Min Height | 156 cm | 163 cm | 171 cm | 179 cm | 185 cm |
| Rider Max Height | 166 cm | 174 cm | 182 cm | 189 cm | 195 cm |
Model Overview
PORTAL A1 completes the Jamis Portal model. Jamis launched 30 bikes of this model so far. Take a sneak peek at all Jamis Portal bikes models from 2019, by clicking here.
Model range prices
The most economical model, the Jamis PORTAL A2 2019 has a starting price of 2999$. Jamis PORTAL A1 2019 on the other hand is the most expensive at 3999$.
Safety
Take safety seriously when you ride your bike, and always wear your helmet. Moreover, don’t ride on the sidewalk. This is actually against the law in some states and can be dangerous for both you and pedestrians.
Trail bikes average price
Our math shows that the average cost of a dependable Trail bike is 2762$. However, paying less money than this amount doesn’t mean that you couldn’t get a great Trail bike. In short, before purchasing your ideal bike do some research about its components, and also check for reviews online.
At the moment of the release date, Jamis PORTAL A1 price was 3999$. Doing a quick comparison, we notice that PORTAL A1 price is 44.79% more expensive than the average cost of a Trail bike.
Average weight for Trail bikes
If we make a quick analysis of the average weight of a Trail bike, we get 12.98 kg (28.62 lbs). A lighter bike will give you some extra advantage when climbing. A heavier bike will have more speed for descents.
PORTAL A1 weighs 14.29 kg (31.5 lbs) and is considerably heavier than the average. In short, the average Trail bike weight is 10.09% lower than this one.
Internal Cable Routing
Moreover, this bike comes with internal cable routing allowing you to keep the cables in a good condition. It also makes it look more professional.
PORTAL A1 components
Fork
The Fox Rhythm Float 34 is included from the factory. It has a travel distance of 130mm. Bike forks are good shock absorbers and provide a smooth ride and a great experience. To sum up, when buying a bicycle, make sure you get a fork that is capable of delivering decent travel.
Fork material
The fork is made out of aluminum, which is a lighter material. However, it is not as tough, nor durable as steel is.
Rear Shock
From the factory, it comes with the FOX Float DPS Performance EVOL rear shock model, which has a travel of 130mm. Rear shocks improve riding comfort and give you greater control over all terrains. In short, if you want smooth rides, get a full-suspension bicycle.
Wheels
As for the wheels, Jamis PORTAL A1 2019, has a 27.5″ aluminum model. 27.5″ wheels are a mixture between 29″ wheels and 26″ wheels. However, the 27.5″ wheels are less forgiving than the 29″ wheels.
Brakes
We ride faster and faster, so a good braking system is essential on a bike nowadays. The PORTAL A1 comes with Hydraulic Disc brakes. These kinds of brakes are among the most popular models used on bikes. To sum up, your safety is in good hands.
Sizes
Jamis PORTAL A1 bike has 5 sizes, in the range of 156 cm – 195 cm (5.12 ft – 6.4 ft). In conclusion, finding one for you shouldn’t be a problem.
Dropper post
A dropper post is included with the PORTAL A1. If used correctly, a dropper post gives you more faith, maneuverability, and greater control over your bike.